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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 22 — Oct. 22, 2012
  • pp: 24139–24150

Phase coding method for absolute phase retrieval with a large number of codewords

Dongliang Zheng and Feipeng Da  »View Author Affiliations

Optics Express, Vol. 20, Issue 22, pp. 24139-24150 (2012)

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A recently proposed phase coding method for absolute phase retrieval performs well because its codeword is embedded into phase domain rather than intensity. Then, the codeword can determine the fringe order for the phase unwrapping. However, for absolute phase retrieval with a large number of codewords, the traditional phase coding method becomes not so reliable. In this paper, we present a novel phase coding method to tackle this problem. Six additional fringe images can generate more than 64( 2 6 ) unique codewords for correct absolute phase retrieval. The novel phase coding method can be used for absolute phase retrieval with high frequency. Experiment results demonstrate the proposed method is effective.

© 2012 OSA

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.2830) Instrumentation, measurement, and metrology : Height measurements
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(100.5088) Image processing : Phase unwrapping

ToC Category:
Image Processing

Original Manuscript: July 30, 2012
Revised Manuscript: September 5, 2012
Manuscript Accepted: September 26, 2012
Published: October 8, 2012

Dongliang Zheng and Feipeng Da, "Phase coding method for absolute phase retrieval with a large number of codewords," Opt. Express 20, 24139-24150 (2012)

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